He came to Nazareth, where he had grown up, and went according to his custom into the synagogue on the Sabbath day. He stood up to read.
Today, Jesus Christ fulfills the commitment of his Jewish religion: it is Saturday and He goes to the synagogue, just as we do when we are going to Mass on Sunday. Jesus is a good teacher: He observes His duties, He obeys and He participates in His "Church". This is why His preaching was so successful. People realized He preached with the example.
-Our good behavior helps others: an image -a good example- is worth a thousand words.